You can search for the Welwyn SK postal codes by its streets and block numbers

Welwyn Area Code is 306 and Time Zone is Central (GMT -06:00).

Welwyn Postal Code - Saskatchewan

Welwyn Postal Code is a six-character string that forms part of a postal address in Canada. Like British and Dutch postcodes, Welwyn - SK postal codes are alphanumeric.

The first three characters (alpha-numeric-alpha) of the postal code which represent a geographic area in Welwyn

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The last three characters denote a Welwyn local delivery unit (LDU). An LDU denotes a specific single Welwyn address or range of addresses, which can correspond to an entire small town, a significant part of a medium-sized town, a single side of a city block in larger cities, a single large building or a portion of a very large one, a single (large) institution in Welwyn, Saskatchewan, such as a university or a hospital, or a business that receives large volumes of mail on a regular basis

If you want to send a mail to Welwyn City, you should use the corresponding Postal Code.